EP 1352712 B1 20111130 - Method for deciding a bevel curve, method for deciding a locus of a bevel, method for processing a lens and apparatus for processing a lens
Title (en)
Method for deciding a bevel curve, method for deciding a locus of a bevel, method for processing a lens and apparatus for processing a lens
Title (de)
Methode zur Bestimmung einer Abschrägungskurve und deren Positionierung, sowie Methode und Vorrichtung zur Bearbeitung einer Linse
Title (fr)
Méthode pour trouver la courbure et la position d'un chanfrein, ainsi que méthode et appareil pour usiner une lentille
Publication
Application
Priority
JP 2002105229 A 20020408
Abstract (en)
[origin: EP1352712A2] Enabling the formation of a suitable bevel in special lenses such as an EX lens even by a person not skilled in the art. <??>When a bevel is formed on an EX lens, the value of the bevel curve is decided based on the value of the curve of the concave face (S711), a reference axis of the bevel curve is decided in the same direction as the direction of the curvature of the concave face (S712), a reference position on the peripheral edge in the portion having the minimum thickness at the lower side in the vertical direction is decided based on the thickness of the portion having the minimum thickness (S713), a correction for the initial reference axis of the bevel curve is obtained based on the ratio of the thickness of the portion having the maximum thickness at the upper side in the vertical direction to the thickness of the portion having the minimum thickness (S714), an angle of inclination of the axis from the direction of the initial reference axis of the bevel curve is obtained based on the correction (S715) and the locus of the bevel is decided based on the value of the bevel curve, the reference position and the angle of inclination of the axis (S716). <IMAGE>Enabling the formation of a suitable bevel in special lenses such as an EX lens even by a person not skilled in the art. <??>When a bevel is formed on an EX lens, the value of the bevel curve is decided based on the value of the curve of the concave face (S711), a reference axis of the bevel curve is decided in the same direction as the direction of the curvature of the concave face (S712), a reference position on the peripheral edge in the portion having the minimum thickness at the lower side in the vertical direction is decided based on the thickness of the portion having the minimum thickness (S713), a correction for the initial reference axis of the bevel curve is obtained based on the ratio of the thickness of the portion having the maximum thickness at the upper side in the vertical direction to the thickness of the portion having the minimum thickness (S714), an angle of inclination of the axis from the direction of the initial reference axis of the bevel curve is obtained based on the correction (S715) and the locus of the bevel is decided based on the value of the bevel curve, the reference position and the angle of inclination of the axis (S716). <IMAGE>
IPC 8 full level
B24B 47/22 (2006.01); G02C 13/00 (2006.01); B24B 1/00 (2006.01); B24B 9/14 (2006.01); B24B 19/03 (2006.01)
CPC (source: EP KR US)
B24B 1/00 (2013.01 - EP US); B24B 9/148 (2013.01 - EP US); B24B 13/00 (2013.01 - KR); B24B 19/03 (2013.01 - EP US); B24B 47/225 (2013.01 - EP US); G05B 2219/36221 (2013.01 - EP US); G05B 2219/45157 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 1352712 A2 20031015; EP 1352712 A3 20031022; EP 1352712 B1 20111130; AT E535347 T1 20111215; CN 1283416 C 20061108; CN 1449892 A 20031022; EP 2052814 A1 20090429; EP 2052814 B1 20130911; JP 2003295133 A 20031015; JP 4562343 B2 20101013; KR 100496561 B1 20050622; KR 20030081026 A 20031017; US 2003227690 A1 20031211; US 2005009455 A1 20050113; US 2005239373 A1 20051027; US 2005239374 A1 20051027; US 2005239375 A1 20051027; US 6887134 B2 20050503; US 6935924 B2 20050830; US 7083498 B2 20060801; US 7083499 B2 20060801; US 7125315 B2 20061024
DOCDB simple family (application)
EP 03007793 A 20030404; AT 03007793 T 20030404; CN 03109525 A 20030408; EP 08006394 A 20030404; JP 2002105229 A 20020408; KR 20030016107 A 20030314; US 17009405 A 20050630; US 17009505 A 20050630; US 17014705 A 20050630; US 40658003 A 20030404; US 89908004 A 20040727